How do I approach a student about a personal hygiene problem?

the only thing i can think of is telling him he needs to wash his uniform or he will not be allowed in cl because the odor is so offensive i know that its not polite but maybe if u and some other students told him he might get the hint. either he doesnt know how to wash it or he is lazy or doesnt care tell him if he wants any friends then he needs to wash his uniform